Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 6 of 6

Thread: Dual speed vs lowest HP

  1. Back To Top    #1

    Join Date
    Aug 2010
    Location
    Orlando, Florida
    Posts
    41

    Dual speed vs lowest HP

    We have to replace our current pump (I believe that it’s a 1 HP Water Ace, also referred to as a “throw away” brand by one pool store) and I’ve been thinking that a dual speed would be the way to go. Our electricity is around $.12/kwh, so I’m not looking at the variable speeds.

    I read in a thread from last year that “the Hayward SuperPump 1 HP Uprated SP2607X102S appears to be the most energy efficient two speed in-ground pump.” However, most of the advice on the forums seems to be “get the lowest HP possible.”

    Should I keep trying to hunt down a 1/2 HP pump (or at least a 3/4 HP pump) or should I stick with the data and try to find a good price on the SuperPump? It seems like the 1/2 HP pumps are less common and less likely to be analyzed, so maybe the data just isn’t available to make a valid comparison. Or maybe it’s because they don’t make the 1/2 HP in 2-speed? If that’s the case, then my question is—what’s better, the single speed 1/2 HP or a dual speed 1 HP? We don’t have anything fancy on the pool, we even use a leaf bagger attached to the hose to vacuum. We MIGHT someday get some type of solar heating, which is why I was thinking it would be useful to have the option of a higher speed. Help?

    Thanks,
    Sara
    17,000 gal, Posi-Flo Sta-Rite cartridge filter, IG, pebble, Water Ace (GE) 1 HP/1.25 SF 115/230V, 100 GPM (Resid.)/37.5 GPM (public pool), 102 SQ FT filter. Future upgrade: 250 SqFt filter.

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Dual speed vs lowest HP

    What kind of cleaner do you use? Most will not work well on Low speed. Typical to run on low speed most of the time and bump up to high speed to run cleaner or enhance skimming. You would also likely need high speed to run solar.

    Is your current pump 120V or 240V?

    Pentair make a couple 3/4HP full rated 2 speed pumps (really 1.25 SFHP). The Whisperflo WFDS-3 (or -24) and the smaller Superflo SF-N2-3/4A. Although with possible solar in the future, that Superflo may be a bit small.

    I recently installed the 1HP Superflo because I needed the 240V and it should be fine with the solar on my 1-story house to be added this year.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  3. Back To Top    #3
    bobodaclown's Avatar
    Join Date
    Apr 2011
    Location
    Lakeland, FL
    Posts
    2,351

    Re: Dual speed vs lowest HP

    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

  4. Back To Top    #4

    Join Date
    Aug 2010
    Location
    Orlando, Florida
    Posts
    41

    Re: Dual speed vs lowest HP

    By "cleaner" do you mean what kind of filter? (If so, I will have to check on that later.) We don't use a regular vacuum for cleaning, we just use the leaf bagger (the pool's not covered, so we were concerned that we would clog the pipes vacuuming up all those leaves and stuff) and that's powered by the magic/physics of a garden hose. We have a cheap, manual vacuum that attaches to the skimmer, but I don't know what type it is.

    I'm not sure on the pump (120V or 240V). Will check.

    I don't just need a new motor. I need the whole thing. There was this metal ring that clamps down on the pump to keep part of it sealed. It broke and it would cost $60 to replace. Although that's much cheaper than a new pump, I'm hoping to get a more efficient one for the long haul. (We have it rigged together temporarily, but it's pushing lots of air through the return jets.)
    17,000 gal, Posi-Flo Sta-Rite cartridge filter, IG, pebble, Water Ace (GE) 1 HP/1.25 SF 115/230V, 100 GPM (Resid.)/37.5 GPM (public pool), 102 SQ FT filter. Future upgrade: 250 SqFt filter.

  5. Back To Top    #5

    Join Date
    Aug 2010
    Location
    Orlando, Florida
    Posts
    41

    Re: Dual speed vs lowest HP

    Follow up question... when I find out the voltage, do I need to match that in my next pump?
    17,000 gal, Posi-Flo Sta-Rite cartridge filter, IG, pebble, Water Ace (GE) 1 HP/1.25 SF 115/230V, 100 GPM (Resid.)/37.5 GPM (public pool), 102 SQ FT filter. Future upgrade: 250 SqFt filter.

  6. Back To Top    #6
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Dual speed vs lowest HP

    By cleaner I was wondering if you have a suction side or pressure side automatic cleaner ... sounds like you just vacuum manually so you could flip to high speed when you do that.

    Install would be easiest if you matched the new pump to the same power as the old pump, but not necessarily required. If you currently have a 120V pump and timer, going to a 240V pump would require changing wiring and likely getting a new timer.

    It kind of depends how your electricity is currently fed to the equipment pad, to know how hard it would be to change the power voltage to the pump.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •